MKS Instruments 247 Four Channel Power Supply / Readout

The MKS Instruments 247 is a four-channel power supply and readout module engineered for precision control and monitoring of mass flow controllers and meters. Each channel operates independently, supplying power and setpoint signals while displaying flow rate data on a 3½ digit red LED display. The unit accepts 0–5 VDC input signals from connected devices and outputs scaled or unscaled analog signals, making it suitable for research and industrial flow control applications requiring accurate data acquisition and remote operation.

– Technical Specifications

• Channels: 4 independent channels
• Display: 3½ digit, 0.56″ red LED, sequentially selectable across channels 1–4
• Input Signal: 4 × 0–5 VDC per channel (from MFC/MFM)
• Unscaled Signal Output: 4 × 0–5 VDC (0–100% full scale)
• Scaled Signal Output: 0–2 VDC maximum
• Gas Correction Factor: Adjustable 0.1 to 4.0 via rear panel potentiometer
• External Setpoint: 0–5 VDC input for remote control
• External ON/OFF Control: TTL-compatible input
• Analog Load Impedance: Minimum 10 kΩ per channel
• Power Supply Output: ±15 VDC at 1.0 Amp maximum
• Power Requirements: 117/234 VAC ±15%, 50–60 Hz (60 VA max.)
• Operating Temperature: 15°C to 40°C
• Form Factor: Half-rack size
• Weight: 7.45 lbs (247D model)

– Key Features

• Independent power and setpoint signal delivery to four channels
• Sequential channel selection and readout on high-visibility LED display
• Remote indicating, recording, and control capability
• Gas correction potentiometer for scaling adjustments
• RS-232 communications link in select configurations

– Typical Applications

Mass flow control and monitoring in laboratory and production environments where multi-channel setpoint distribution and flow rate readout are essential.

– Compatibility & Integration

The 247 operates with MKS Instruments mass flow controllers (models 179, 180, 579, 1179, 1479, 1480, 1559, 1579, 2179, M10M, M100) and compatible readout instruments (models 358, 558, 1150, 1359, 1559, 1179, 1479). Interface connectors P5, P6, and MFC connectors (J1–J4) support standard configurations.